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Sodalite
Sodalite

Feldspar
Feldspar



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1 Optical Properties
1.1 Luster
Greasy
Vitreous
1.2 Pleochroism
AbsentWalter Schumann
None
1.4 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.9 Transparency
Transparent, Translucent, Opaque
Transparent, Translucent
1.12 Refractive Index
1.478-1.4881.518-1.570
Agate Opal
1 3.25
1.14 Optic Character
Not Available
Not Available
1.15 Crystal System
cubic
Triclinic or monoclinic
1.17 Birefringence
Not Available0.008-0.010
Achroite
0 0.296
1.19 Clarity
Transparent
Transparent